Study the figure below carefully and use it to answer the question that follows.

1. When the lamp was connected to P and R it was brighter.
2. When the lamp was connected to P and S it was bright.
3. The number of cells between P and R is twice that between P and Q.
4. There is no cell between Q and S.
Which of the following circuits is most likely to be within the box, assuming all the cells are the same?